In the fall of 2002, two 6-cylinder models were introduced to the McCormick MC series as lighter and shorter alternatives to the MTX series. The engines were 6.0-liter Perkins from the 1100 series. The engine control was electronic. The smaller model was initially designated MC115 Power6, but in 2003 it was changed to MC120 Power6. The technology was consistent with the smaller MC models. There were 16 forward + 12 reverse gears, and a lifting capacity of 5900 kg (6600 kg with an auxiliary cylinder).

In the spring of 2004, the updated engines had 4 horsepower more power and an optional quick-shift automatic transmission.

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